Dual configuration speaker



FIG. 1 is a front, top and left perspective view of a dual configuration speaker showing our new design;

FIG. 2 is front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken line showing on the drawing disclosure is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a dual configuration speaker, substantially as shown and described. 